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» Grouping and aggregation in the concept-oriented data model
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EWSN
2008
Springer
14 years 7 months ago
Spatiotemporal Anomaly Detection in Gas Monitoring Sensor Networks
In this paper3 , we use Bayesian Networks as a means for unsupervised learning and anomaly (event) detection in gas monitoring sensor networks for underground coal mines. We show t...
X. Rosalind Wang, Joseph T. Lizier, Oliver Obst, M...
SSDBM
2007
IEEE
121views Database» more  SSDBM 2007»
14 years 1 months ago
Cost-based Optimization of Complex Scientific Queries
High energy physics scientists analyze large amounts of data looking for interesting events when particles collide. These analyses are easily expressed using complex queries that ...
Ruslan Fomkin, Tore Risch
CN
2004
106views more  CN 2004»
13 years 7 months ago
An overlay framework for provisioning differentiated services in Source Specific Multicast
Scalability in QoS-aware multicast deployment has become an important research dimension in recent years. In this paper we propose a new scheme named Differentiated QoS Multicast ...
Ning Wang, George Pavlou
VLDB
1995
ACM
132views Database» more  VLDB 1995»
13 years 11 months ago
Coloring Away Communication in Parallel Query Optimization
We address the problem of finding parallel plans for SQL queries using the two-phase approach of join ordering and query rewrite (JOQR) followed by parallelization. We focus on t...
Waqar Hasan, Rajeev Motwani
P2PKM
2004
13 years 8 months ago
Coordinating Mobile Databases
Abstract. We are interested in the development of a database management layer which is completely portable and, therefore, "pluggable" on top of multiple host platforms. ...
Fausto Giunchiglia, Ilya Zaihrayeu